Ultra-simple technology invention (not repeated)

Production method:

1. Assemble alarm;

2. Make a good car model;

3. Hide the assembled alarm in the car model;

4. Connect the alarm and electronic key with wires.

Second, the multifunctional windproof clothes rack

Production instructions:

Make four bamboos with a length of 20cm, a width of 1.2cm and a thickness of 0.2cm. Drill a hole with a diameter of 1 mm in the center of both ends of the bamboo pieces, and connect the four bamboo pieces into a square with rivets. Select two endpoints and connect them with a 40cm long clamp rope.

Third, automatic water feeder.

Production method:

1. Material preparation: 1000ml coke bottle, mineral water bottle, 40 cm plastic pipe with a diameter of 0.5 cm.

2. Assembly steps:

(1) Drill two holes with a diameter of 0.5cm at the bottle cap of mineral water.

(2) Cut the plastic pipe into 30 cm long as the positioning water pipe and 10 cm long as the water supply pipe, and insert them respectively, one of which is inserted into the bottom of the bottle and the other is inserted into the bottle mouth.

(3) Cut the bottom of the Coke bottle to 10 cm to make a basin, and drill a hole with a diameter of 0.5 cm above and below the basin.

(4) Insert the water supply pipe into the lower hole, and insert the positioning water pipe into the lower hole.

(5) Connect and fix the water supply bottle and the water receiving basin with iron wire.

Fourth, the ball catcher

Usage: point the grid at the bottom of the ball picker at the table tennis ball on the ground, so that the ball can enter smoothly without falling down, and you can pick up many balls continuously. Then put the ball picker up, let the round hole be teased and the table tennis ball roll out.